Whiffletree.



Patented Aug. 26, |902.l

R. lw. MCKINLEY. WHIFFLETREE. (Application med Jan. 2o, 1902.)

(No Model.)

IlniTnn STATns lATTnNT Trigon,

ROBERT IV. MCKINLEY, OF RIPLEY, OHIO.

Waarna-rane.

SPECIFICATION forming part of Letters Patent No. 707,7 95, dated August 26, 1902.

Application filed January 20,1902. Serial No. 90,506. KNO model.)

To rl/ZZ whom' zit nmy/ concern,-

Beit known that I, ROBERT W. MoKINLnY, a citizen of the UnitedStates, residing at Ripley, in the county of Brown and State of Ohio, have invented certain new a'nd useful Improvements in lVhiftletrees, of which the following is Ia specification, reference being had therein to the accompanying drawings.

My invent-ion relates to new and usefulimprovements in doubletrees; and its primary object is to provide a device of this character having means of simple and durable construction whereby the tree may be shifted either to the right or left in relation to its pivot, so as to equalize the strain or pull where horses of unequal strength are'harnessed thereto.

Vtith these and other objects in View the invention consists in the novel construction and combination of parts hereinafter more fully described and claimed, and illustrated in the accompanying drawings, showing the `preferred form of my invention,and in Whichi Figure lis a perspective view of the doubletree. Fig, 2 is a section through the doubletree and one of the securing-nuts of the adjusting mechanism, and Fig. 3 is a similar section taken through the pivot of the device.

Referring to the figures by numerals of refence, l is a doubletree of any suitable form and material. Bolts 2 extend transversely therethrough from front to rear and project into slots 3, arranged longitudinally within a plate 4, slidably mounted upon the front edge or face of the doubletree. This plate is provided upon its front face with a series of teeth 5, which are adapted to be engaged by teeth formed upon the inner faces of blocks 6, mounted upon the ends of the bolts 2. Nuts 7 are arranged upon the threaded ends of the bolts and are adapted to clamp the blocks against the plate Lt. Extending forward from the plate 4: at a point intermediate the two slots 3 is an eye 8, Within which is loosely mounted a verticalbolt t). The ends of the bolt are secured to the ends of a loop 10, which extends back over the rear edge of the doubletree and is adapted to be secured to a Wagon or other vehicle.

Vheu it is desired to adjust the doubletree so as to equalize the strain upon the draftanimals, the nuts '7 are loosened, so as to per-l mit the blocks G to become disengaged from the teeth of the plate 4. Said plate is then shifted either to the right or left until the bolt 9 is brought to the properposition. Blocks U are then clamped against the plate, and the same is firmly locked in adjusted position.

In the foregoing description I have shown the preferred form of my invention; but I do not limit myself thereto, as I am aware that modificationsmay be made therein, and I therefore reserve the right to make such changes as fairly fall within the scope of my invention.

I'Iaving thus fully `described my invention, what I therefore claim as new, and desire to secure by Letters Patent, isj l. The combination With a whiftletree; of a slotted plate slidably mounted thereon, teeth upon said plate, toothed blocks nor mally engagingvthe teeth of the plate, means for clamping said blocks against the plate whereby said plate is locked in adjusted position, and a pivot-bolt for the Whiffletree, secured to theslidable plate.

2. The combination With a Whifiietree; of bolts extending therefrom, a slotted plate slidably mounted thereon, teeth upon the plate, toothed blocks upon the bolts and e11- gaging the teeth of the plate, nuts upon the bolts for clamping the blocks and plate together, a pivot-bolt for the whifiietree, secured to the plate.

In testimony whereof I affix my signature in presence of two Witnesses.

ROBERT W. MCKINLEY.

Vitnesses: A l

J. FUERNAKE, WILLrn D. ASIMBLA. 

